Advanced Engine Design Carburetors & Accessories

Advanced Engine Design: Precision Carburetor Parts for Serious Performers

When it comes to keeping a carburetor running at peak efficiency, the quality of every component matters — from the tiniest gasket to the needle and seat. Advanced Engine Design (AED) has built a reputation in the performance and racing community as a go-to source for high-quality carburetor parts and accessories that are engineered to exact tolerances and trusted in some of motorsport's most demanding applications.

AED Performance, located in North Chesterfield, VA, researches, designs, and manufactures a complete line of performance and competition carburetor products for use in the Pro Street, Drag Racer, Circle Track, Pulling, Marine, and Off Road markets — including gaskets, gauges, brackets, fuel lines and logs, metering blocks, carburetor pumps, and jets. This broad range means that whether you're refreshing a worn street carburetor or fine-tuning a race-prepped setup, AED likely has the specific component you need.

Purpose-Built Accessories for Holley and More

Advanced Engine Design's carburetor accessories catalog is especially deep when it comes to Holley carburetor applications. Their lineup includes a wide variety of components designed specifically for popular platforms like the Holley 4150, 4160, 4500, and 2300 carburetors, as well as Demon and Quick Fuel units. Specific products include:

• Carburetor Rebuild Kits — Available for Holley 4150 carburetors in both gas (AED-41501) and methanol configurations, making them suitable for everything from street cruisers to alcohol-burning race cars.
• Needle and Seat Assemblies — Adjustable designs with Viton or stainless construction in multiple orifice sizes (0.110", 0.125", 0.150") for precise fuel delivery tuning across Holley and Quick Fuel carburetors.
• Power Valves — Including four-door single-stage units with gaskets, sold in value multi-packs for shop or team use.
• Gaskets and Seals — Reusable composite and blue gaskets for float bowls and metering blocks compatible with Holley 4150/4160/4500 platforms, engineered to resist fuel absorption and compression set over time.
• Accelerator Pump Components — Umbrella-style check valves and 50cc diaphragms for maintaining crisp throttle response.
• Float Bowl Hardware — Hex-head fuel bowl screws in cadmium-plated steel, sight plug assemblies, and complete hardware clip/pin/screw/spring kits.
• Jet Extensions and Jet Kits — Push-on jet extensions for secondary circuits on Demon, Holley 4150/4160/4500 carburetors, enabling precise air/fuel ratio adjustments.

Why Choose AED for Carburetor Accessories?

With over three decades of research, design, and development behind them, AED operates one of the most advanced facilities in the performance industry — including a computer-controlled wet flow bench capable of flowing any throttle bore combination and measuring CFM, air-fuel ratio, test pressure, and RPM-corrected data, alongside in-house CNC machining centers, flowbenches, and both engine and chassis dynos. This level of in-house capability means that even small accessory components are developed and validated with the same rigor applied to their full carburetor builds.

For the racer or enthusiast who demands accuracy and durability in every part of their fuel system, Advanced Engine Design's carburetor accessories offer a compelling combination of precision manufacturing and competition-proven design. Explore the full Advanced Engine Design brand catalog to see everything they offer across their performance lineup.